Obama at G-20 summit

President Obama was unable to seal a long-anticipated free trade agreement with South Korea during his trip to Asia. He faces an energized Republican opposition when he returns to Washington.

President Obama was unable to seal a long-anticipated free trade agreement with South Korea during his trip to Asia. He faces an energized Republican opposition when he returns to Washington. (Tim Sloan / AFP/Getty Images)

President Obama was unable to seal a long-anticipated free trade agreement with South Korea during his trip to Asia. He faces an energized Republican opposition when he returns to Washington.